Ocxam's razor bro‘Employees fired for having opinions’ could be ‘Employees tries to be heard and thin-skimmed bosses aren’t interested in their feedback’, or it could be ‘opinionated and disgruntled employee cause unpleasant working environment and won’t accept company policy or change so are fired.”
I’ve worked with too many of both types to pass judgement on the right or wrong of a situation. I’m not sure ‘ex-employee doesn’t think their opinion was heard’ counts as news though.